Fidgety Girls - is she interested in me?

There is this girl that I met last week, we really hit it off and I got a good impression that she liked me. She kept playing with her hair and was laughing at stuff that I didn't even think was funny. But this week when I met her she was distant and cold. It was hard to hold a conversation with her and she kept avoiding eye contact with me. But the big thing that was weird was that she was very fidgety, she couldn't stay still. This girl is introverted and shy yet very confident in herself. Are there any girls that feel this way with a guy that they liked?
Fidgety Girls - is she interested in me?
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